| (19) |
 |
|
(11) |
EP 1 741 902 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
14.03.2012 Bulletin 2012/11 |
| (43) |
Date of publication A2: |
|
10.01.2007 Bulletin 2007/02 |
| (22) |
Date of filing: 30.06.2006 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE
SI SK TR |
|
Designated Extension States: |
|
AL BA HR MK RS |
| (30) |
Priority: |
01.07.2005 US 696016 P
|
| (71) |
Applicant: Goodrich Pump & Engine Control Systems, Inc. |
|
West Hartford, CT 06133-0651 (US) |
|
| (72) |
Inventors: |
|
- Desai, Mihir C.
Yorba Linda, CA 92887 (US)
- Grochowski, Kurt
Wallingford, CT 06492 (US)
|
| (74) |
Representative: Gibbs, Richard |
|
Marks & Clerk LLP
Aurora
120 Bothwell Street
Glasgow G2 7JS
Glasgow G2 7JS (GB) |
|
| |
|
| (54) |
Variable jet mixer for improving the performance of a fixed displacement fuel pump |
(57) The invention includes a fuel delivery system (10) for a gas turbine engine in combination
with an associated method and machine readable program. The system (10) includes a
fixed displacement pump (20) having an inlet portion and a discharge portion, and
a mixer (30) operatively associated with the pump (20). The mixer (30) includes a
first inlet (28) in fluid communication with the discharge portion of the pump for
receiving a relatively high pressure bypass flow (26) from the pump, a second inlet
(34) in fluid communication with a fuel source for receiving a relatively low pressure
fuel flow (32) from the fuel source, a mixing chamber (44) within the mixer (30) wherein
the relatively high pressure bypass flow (26) from the pump (20) mixes with the relatively
low pressure flow (32) from the fuel source to generate an energized fuel mixture
(22a), and a discharge in fluid communication with the mixing chamber for directing
the energized fuel mixture to the inlet of the pump.